/* crew calcul · native ocean interface. No fonts, images, or network imports. */
:root {
  color-scheme: dark;
  --bg-primary: #0a192f;
  --bg-card: #112240;
  --border-color: #233554;
  --text-primary: #f8fafc;
  --text-secondary: #8892b0;
  --accent-gold: #e2b170;
  --color-east: #64ffda;
  --color-west: #ff7b72;
  --color-warning: #ffd166;
  --bg-hover: #1b3152;
  --focus-color: var(--accent-gold);
  --modal-backdrop: rgb(2 10 23 / 82%);
  --shadow-color: rgb(0 0 0 / 24%);
  --radius: 20px;
}
[data-theme="night-red"] {
  color-scheme: dark;
  --bg-primary: #050505;
  --bg-card: #050505;
  --border-color: #450a0a;
  --text-primary: #ef4444;
  --text-secondary: #991b1b;
  --accent-gold: #ef4444;
  --color-east: #ef4444;
  --color-west: #991b1b;
  --color-warning: #ef4444;
  --bg-hover: #450a0a;
  --focus-color: #ef4444;
  --modal-backdrop: rgb(5 5 5 / 94%);
  --shadow-color: #050505;
}
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
.cc-header, .cc-view, .cc-modal {
  color: var(--text-primary);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  accent-color: var(--accent-gold);
  -webkit-tap-highlight-color: transparent;
}
.cc-header *, .cc-view *, .cc-modal * { scrollbar-color: var(--border-color) var(--bg-primary); }
.cc-header button, .cc-view button, .cc-modal button,
.cc-view input, .cc-view select {
  min-height: 48px;
  min-width: 48px;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background: var(--bg-primary);
  color: var(--text-primary);
  font: inherit;
  padding: 10px 14px;
  transition: 0.2s ease;
}
.cc-header button, .cc-view button, .cc-modal button { cursor: pointer; font-weight: 650; }
.cc-header button:hover, .cc-view button:hover, .cc-modal button:hover { background: var(--bg-hover); border-color: var(--accent-gold); }
.cc-header button:disabled, .cc-view button:disabled { cursor: not-allowed; opacity: .55; }
.cc-header :focus-visible, .cc-view :focus-visible, .cc-modal :focus-visible {
  outline: 2px solid var(--focus-color);
  outline-offset: 4px;
}
.cc-view input { width: 100%; caret-color: var(--accent-gold); }
.cc-view input::placeholder { color: var(--text-secondary); opacity: 1; }
.cc-view input[aria-invalid="true"] { border-color: var(--color-warning); }
.cc-view input.cc-number { font-family: ui-monospace, monospace; font-weight: 700; font-size: 1.35rem; font-variant-numeric: tabular-nums; }
.cc-view input:autofill { background: var(--bg-primary); color: var(--text-primary); }
.cc-view input:-webkit-autofill {
  -webkit-text-fill-color: var(--text-primary);
  box-shadow: 0 0 0 1000px var(--bg-primary) inset;
  caret-color: var(--text-primary);
}
.cc-view [hidden], .cc-header [hidden], .cc-modal [hidden] { display: none !important; }
.cc-header {
  min-height: 92px;
  padding: 20px max(24px, calc((100vw - 1160px) / 2));
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.cc-brand { margin: 0; color: var(--accent-gold); font-size: 1.6rem; letter-spacing: -.06em; font-weight: 750; }
.cc-vessel { margin: 0; color: var(--text-secondary); font-size: .85rem; overflow-wrap: anywhere; }
.cc-actions, .cc-segment, .cc-password { display: flex; align-items: center; gap: 8px; }
.cc-actions { flex-wrap: wrap; }
.cc-view { width: min(1160px, calc(100% - 48px)); margin: 40px auto 64px; }
.cc-card { padding: 28px; border: 1px solid var(--border-color); border-radius: var(--radius); background: var(--bg-card); box-shadow: 0 12px 40px var(--shadow-color); }
.cc-eyebrow { margin: 0 0 10px; color: var(--accent-gold); font-size: .75rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.cc-title { font-size: clamp(1.55rem, 3vw, 2.1rem); line-height: 1.3; margin: 0 0 12px; font-weight: 650; letter-spacing: -.03em; }
.cc-subtitle { margin: 0 0 24px; color: var(--text-secondary); }
.cc-section-title { margin: 0 0 16px; font-size: 1.05rem; font-weight: 650; }
.cc-auth { max-width: 540px; margin-top: 64px; }
.cc-auth .cc-card { padding: clamp(24px, 5vw, 44px); }
.cc-form { display: grid; gap: 20px; }
.cc-field { display: grid; gap: 8px; min-width: 0; }
.cc-label { font-size: .875rem; font-weight: 650; }
.cc-hint { font-size: .8rem; color: var(--text-secondary); margin: 0; }
.cc-password input { min-width: 0; }
.cc-password button { white-space: nowrap; }
.cc-view .cc-primary { background: var(--accent-gold); color: var(--bg-primary); border-color: var(--accent-gold); }
.cc-view .cc-primary:hover { background: var(--bg-hover); color: var(--accent-gold); }
.cc-status { color: var(--color-warning); min-height: 1.5em; margin: 0; overflow-wrap: anywhere; font-size: .9rem; }
.cc-tabs { display: flex; gap: 8px; border-bottom: 1px solid var(--border-color); padding-bottom: 14px; margin-bottom: 28px; }
.cc-tabs button { flex: 1; }
.cc-view [aria-selected="true"], .cc-view [aria-pressed="true"], .cc-header [aria-checked="true"] { border-color: var(--accent-gold); color: var(--accent-gold); background: var(--bg-hover); }
.cc-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 24px; align-items: start; }
.cc-stack { display: grid; gap: 24px; }
.cc-input-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.cc-span { grid-column: 1 / -1; }
.cc-segment { flex-wrap: wrap; }
.cc-segment button { flex: 1; white-space: nowrap; }
.cc-error-input { display: flex; gap: 8px; }
.cc-error-input input { min-width: 0; flex: 1; }
.cc-error-input .cc-segment { flex-wrap: nowrap; gap: 4px; }
.cc-result-main { font: 700 clamp(2.4rem, 5vw, 3.5rem)/1.2 ui-monospace, monospace; letter-spacing: -.06em; color: var(--accent-gold); margin: 8px 0 24px; }
.cc-results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin: 0; }
.cc-results dt { color: var(--text-secondary); font-size: .8rem; }
.cc-results dd { margin: 4px 0 0; font: 650 1.3rem ui-monospace, monospace; overflow-wrap: anywhere; }
.cc-east { color: var(--color-east); }
.cc-west { color: var(--color-west); }
.cc-warning { margin-top: 20px; padding: 14px 16px; border: 1px solid var(--color-warning); border-radius: 10px; color: var(--color-warning); background: var(--bg-primary); }
.cc-dial-wrap { display: grid; place-items: center; min-height: 260px; }
.cc-dial { width: min(100%, 260px); height: auto; display: block; overflow: visible; color: var(--text-primary); }
.cc-dial .dial-ring { fill: var(--bg-primary); stroke: var(--border-color); }
.cc-dial .dial-tick { stroke: var(--text-secondary); stroke-width: 1; }
.cc-dial .dial-major { stroke: var(--accent-gold); stroke-width: 1.5; }
.cc-dial .dial-label { fill: var(--text-secondary); font: 9px ui-monospace, monospace; text-anchor: middle; dominant-baseline: central; }
.cc-dial .dial-north { fill: var(--accent-gold); font-weight: 700; }
.cc-dial .dial-c { stroke: var(--accent-gold); fill: var(--accent-gold); }
.cc-dial .dial-m { stroke: var(--color-east); fill: none; stroke-dasharray: 4 3; }
.cc-dial .dial-t { stroke: var(--text-primary); fill: var(--text-primary); }
.cc-dial .dial-arc { fill: none; stroke-width: 2; }
.cc-dial .dial-east { stroke: var(--color-east); }
.cc-dial .dial-west { stroke: var(--color-west); stroke-dasharray: 3 2; }
.cc-dial .dial-arc-label { font: 8px ui-monospace, monospace; text-anchor: middle; fill: var(--text-secondary); }
.cc-dial .dial-hub { fill: var(--bg-card); stroke: var(--text-primary); stroke-width: 2; }
.cc-dial .dial-needle { transition: 0.2s ease; }
.cc-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; color: var(--text-secondary); font-size: .75rem; margin-top: 12px; }
.cc-legend span:first-child { color: var(--accent-gold); }
.cc-legend span:nth-child(2) { color: var(--color-east); }
.cc-legend span:nth-child(3) { color: var(--text-primary); }
.cc-table-wrap { overflow-x: auto; }
.cc-table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
.cc-table caption { text-align: left; margin-bottom: 16px; color: var(--text-secondary); font-size: .85rem; }
.cc-table th, .cc-table td { border-bottom: 1px solid var(--border-color); text-align: left; padding: 12px; }
.cc-table th { color: var(--text-secondary); font-size: .8rem; font-weight: 500; }
.cc-table td { font-family: ui-monospace, monospace; }
.cc-table tbody tr:hover { background: var(--bg-hover); }
.cc-copy { width: 100%; margin-top: 20px; }
.cc-modal {
  width: min(560px, calc(100% - 32px));
  max-height: calc(100dvh - 48px);
  overflow: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-card);
  padding: 32px;
  box-shadow: 0 24px 80px var(--shadow-color);
}
.cc-modal::backdrop { background: var(--modal-backdrop); backdrop-filter: blur(8px); }
.cc-modal-top { display: flex; justify-content: space-between; gap: 16px; align-items: start; }
.cc-modal blockquote { margin: 24px 0 12px; color: var(--accent-gold); font-size: 1.2rem; line-height: 1.6; }
.cc-formula { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 20px 0; font: 700 1.1rem ui-monospace, monospace; }
.cc-formula span { border: 1px solid var(--border-color); border-radius: 8px; padding: 12px; }
.cc-modal p { color: var(--text-secondary); }
.cc-modal .cc-east { color: var(--color-east); }
.cc-modal .cc-west { color: var(--color-west); }
/* All component graphics use theme variables, including autofill and selection. */
[data-theme="night-red"] ::selection { color: #ef4444; background: #450a0a; }
[data-theme="night-red"] .cc-header,
[data-theme="night-red"] .cc-view,
[data-theme="night-red"] .cc-modal { background-color: #050505; }
[data-theme="night-red"] .cc-view .cc-primary { color: #ef4444; background: #450a0a; border-color: #991b1b; }
[data-theme="night-red"] .cc-view .cc-primary:hover { color: #ef4444; background: #050505; border-color: #ef4444; }
@media (max-width: 1000px) {
  .cc-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 760px) {
  .cc-header { padding: 16px; gap: 12px; flex-wrap: wrap; }
  .cc-view { width: calc(100% - 32px); margin-top: 24px; }
  .cc-grid { grid-template-columns: minmax(0, 1fr); }
  .cc-tabs { gap: 6px; }
  .cc-tabs button { font-size: .8rem; padding: 10px 6px; }
  .cc-card { padding: 20px; }
  .cc-input-grid { grid-template-columns: minmax(0, 1fr); }
  .cc-header .cc-actions { gap: 6px; }
  .cc-header button { padding: 10px; font-size: .85rem; }
}
@media (prefers-reduced-motion: reduce) {
  .cc-header *, .cc-view *, .cc-modal *, .cc-dial * { transition: none !important; animation: none !important; }
}

/* Switch the palette immediately: interpolating from day colors leaks light. */
[data-theme="night-red"] .cc-header *,
[data-theme="night-red"] .cc-view *,
[data-theme="night-red"] .cc-modal *,
[data-theme="night-red"] .cc-dial * { transition-property: transform, opacity; }

/* Final assembly: compact bilingual labels, calibration editing, encrypted history. */
.cc-appbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-top: 18px; margin-bottom: 16px; }
.cc-appbar + .cc-view { margin-top: 24px; }
.cc-appbar .cc-hint { color: var(--color-east); }
.cc-view h1 { font-size: clamp(1.5rem, 3vw, 2rem); }
.cc-view .cc-segment button { white-space: normal; }
.cc-card-source { border-left: 2px solid var(--accent-gold); padding: 8px 12px; margin: 0 0 24px; color: var(--accent-gold); font-size: .875rem; }
.cc-history { margin-top: 24px; }
.cc-history summary { min-height: 48px; cursor: pointer; padding: 12px 0; color: var(--accent-gold); font-weight: 650; }
.cc-calibration-rows { display: grid; gap: 16px; }
.cc-log { padding: 16px 0; border-top: 1px solid var(--border-color); overflow-wrap: anywhere; }
.cc-log h3 { font-size: .9rem; color: var(--text-secondary); }
.cc-log p { margin: 6px 0; }
.cc-auth { margin-top: 24px; }
.cc-label, .cc-hint, .cc-results dt { font-size: .875rem; }
.cc-brand { letter-spacing: -.04em; }
.cc-form .cc-primary, .cc-copy { white-space: normal; }
@media (max-width: 760px) {
  .cc-appbar { align-items: flex-start; flex-direction: column; }
  .cc-tabs button { overflow-wrap: anywhere; }
  .cc-header .cc-actions { width: 100%; }
  .cc-header .cc-actions .cc-status:empty { display: none; }
}